Polishing-machine.



J. G. GIESBERG.

POLISHING MACHINE.

APPLICATION FILED FEB, 21. I9I4.

Patented Apr 6, 1915 3 SHEETSSHBET l.

IIIIIIIH:HHII

MJZ EZ W W ITIVESSES:

'1. G. GIESBERG.

POLISHING MACHINE.

APPLICATION FILED FEB.2I, 1914.

Patented Apr. 6, 1915.

3 SHEETS-SHEET 2.

R m M. wr A WITNESSES:

J. G. GIESBERG.

POLISHING MACHINE. APPLICATION FILED FEBJZI. r914.

Patented APR 6, 1915.

3 SHEETSVSHEB" 3 IIVVENTOR M 1. K/MM W/T/VESSES: I

PATENT OFFICE.

JOHN G. emsnnne, ornonsron, TEXAS.

. romsnme-mecnmn.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed February 21, 1914. Serial No. 820,326.

To all whom it may concern:

Be it known that I, JOHN G. Gmsnnae,

a citizen of the .United States, residing at .Houston, in the county of' Harris and State of Texas, have invented certain new and useful Improvements in Polishing- Machines, of which the following is a specification.

This invention relates to new and useful improvements in polishing machines.

The object of the invention is to provide a device of the character described for polishing marble and other similar stones, and may be used for the purpose of polishing and giving a smooth surface to any material of like character.

Another feature of the'invention resides in the provision of a movable abrading member, which is automatically rotated, and comprehends also a mechanism whereby said member may be automatically moved back and forth over the surface to be polished.

A further feature of theinvention resides in the provision of a mechanism whereby the position of the abrading member will be automatically adjusted so as to accommodate itself to the surface to be -polished.

A still further feature of the invention resides in the provision of means whereby said abrading member may be elevated and lowered so as to accommodate itself to the different thicknesses of slabs to be polished.

With the above and other objects in view, the invention has particular relation to certain novel features, of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings,

wherein Figure 1 is a side elevation of the complete device. Fig. 2 is a sectional end view thereof. Fig. 3 is a fragmentary side elevation thereof. Fig. 4 is a vertical sectional view of the abrading member and the operative mechanism thereof. Fig. 5 is a side elevation thereof. Fig. 6 is a fragmentary detail view of the mechanism for moving said abrading member back and forth upon its supporting track. Fig. 7 shows a detail fragmentary view of the reversing mechanism, in a position the reverse of that shown in Fig. 1. Fig. 8 shows a detail view of said mechanism, shown in a position the reverse of that shown in F1g. 7. Fig. 9 shows a sectional end view of the drive shaft and the clutch mechanism carried thereby. Fig. 10 shows a. detail view of the mechamm for elevating and lowering the abradmg member, and Fig. 11 shows a fragmentary view of the drive wheel through which power is transmitted to the device from 'any suitable motor.

Referring now more particularly to the drawings, wherein like numerals of reference designate similar parts in each of the figures, the numerals 1, 1; 2, 2 and 3, 3 refer, respectively, to three pair of upstanding rods,-or legs, the members 2 and 3, being somewhat longer than the members 1.' The members of each pair of legs are spaced asuitable distance apart and are fixed at their lower ends to suitable bases, such as 4 and 5 and their upper ends, respectively, are connected by suitable castings 6, 7 and 8, as shown in detail in Figs. 2 and 10. Each pair of legs is provided with a casting, said castings being numbered, respectively, 9, 10 and 11 and provided, respectively, with side sleeves 12, 13 and 14, which surround the -respective legs 1, 2 and 3 and are vertically slidable thereon. Secured to these corresponding sleeves, on each side of the device, are the respective guides 15 and 16, which are preferably square in cross section and which form a track for a purpose to be hereinafter stated. These shafts may be made of any desired length, in accordance with the desired capacity of the machine.

Slidably mounted upon this track is the driving mechanism of theiabrading member, which will now be 'describedzA cylindrical two part casting 17 is provided, having an internal inclosed chamber 18. This casting is pivotally mounted between theyokes 19 and 20, which have on each side the respective bearings 21, 21 and 22, 22 which conform in shape to the cross-sectional shape of the respective guides 15 and 16 and through which said guides extend. The yokes 19 and are fixed in their position relative to each otherby means of the rods 23 and 21 and the cylindrical casting 17 is mounted between the yokes 19 and 20 by-means of the respective sleeves 25 and 26 which extend through bearings in said respective yokes and the corresponding sides of said casting 17 and support the latter between said yokes and upon which said casting oscillates. A drive shaft 27, square in cross section, extends through said sleeves and is mounted in suitable bearings in the respective castings 10, 11 and 12. The inner end of the sleeve 25 carries a rigidly mounted bevel gear wheel 28 which meshes with a corresponding bevel gear wheel 29, rigidly mounted upon the inner end of the vertical shaft 30, which rotates in bearing 31, carried by the under side of the casting 17. The lower end of the shaft 30 has a disk 32, tixed thereon, whose under side has an abrading surface 33, which comes in contact with the marble or other material to be polished. ater is admitted to the chamber 18 through a suitable water pipe 3-1 connected therewith and the shaft 30 has a longitudinal fluid passageway through which water passes from said chamber 18 to the abrading member and to the surface to be polished thereby. The casting 17 is pivoted between the yokes 19 and 20, so that the abrading member may oscillate back and forth so as to accommodate its under surface to the surface being polished.

Fixed upon the shaft 27 between the castings 9 and 10 is the drive wheel 35, through which rotation is imparted from a suitable motor, (not shown) to said drive shaft and from this drive shaft rotation is imparted to the gear wheel 28 and thence to the gear wheel 29, the shaft 30 and the abrading member. The shaft 27 also has a screw gear 36 fixed thereon which meshes with and rotates a screw gear wheel 37, which is mounted on a short transverse shaft 38 which rotates in the bearings 39, 39, carried by the casting 9. The inner face of the gear wheel 37 has a bevel gear face which is at all times in mesh with opposing gear wheels 40 and 41, loosely mounted upon the screw shaft 42. The back of each of the gear Wheels 40 and 41 has a clutch member, designated, respectively, by the numerals 43 and 44, opposing which and slidably mounted upon the shaft 42, but keyed thereto so as to be rotatable therewith are corresponding clutch members 45 and 46. These clutch members, respectively, have the annular grooves 47 and 48, in which the fingers of the bifurcated ends of the yoke 49 rest, and by means of which said clutch members are moved back and :forth upon the shaft 42 and alternately brought into engagement with their corresponding clutch members carried by the respective gear wheels 40 and 41. The shaft 42 is rotatable in suitable bearings carried by the respective castings 9, 10 and 11 and passes through alined slots 50 of the flanges 51, which depend from the underside of the casting 17 and which are connected by means of the bridge 52. Theshaft 42 is threaded throughout its entire length between the castings 10 and 11 and passes through a tapped hole of the sleeve '53, located between the flanges 51, 51, and somewhat larger in diameter than the diameter of the slots 50. A rod 54 is provided on the rear side of the machine and is slidable lengthwise in bearings, as 55, carried by the sleeves 12, 13 and 14, and also passes through the lugs 56 carried by the yokes 19 and 20. This rod has two stops 57 and 58 adjustable thereon, but which may be fixed against movement relative to the rod by means of suitable set screws. The stops are located, one on each side of the lugs 56,

The numeral 59 refers to a lever whose lower end has a transverse arcuate slot 60, through which the pin 61 passes. The inner end of this pin is threaded into a corresponding tapped hole in the yoke 49 and its outer end has a head which prevents its disengagement from said slot. The outer end of the lever 59 carries a weight 62 and the lever is pivoted at an intermediate point to the rod 54, by means of a set bolt 63.

As the drive shaft 27 rotates corresponding rotation is imparted to the screw gear 36 carried thereby and to its inter-meshing screw gear 37. The bevel gears 40 and 41 are thus constantly rotated in opposite directions through the bevel gear face carried by said gear wheel 37 and the screw shaft 42 will rotate in one direction or the other, accordingly as the clutch member 45 or 46 is in mesh with its corresponding clutch member 43 or 44. The rotation of said shaft 42 operates to drive the abrading member and its operative mechanism along the track formed of the shafts 15 and 16 in-one direc-- tion or the other according to the direction of rotation of said shaft. As shown in Fig. 1, the clutch 45 is in engagement with the clutch member 43 and the abrading member and its operative mechanism will be forced along by the shaft 42 until the lug 56 comes in contact with the stop 58, which will operate to move the shaft 54 lengthwise and reverse the position of the lever 59. \Vhen the position of said lever 59 is reversed, the clutch member 45 will be disengaged from the clutch member 43, and the clutch member 46 will be carried into engagement with the clutch member 44. This result will be effected through the shifting of the yoke 49 by the lower end of the lever 59 acting against the pin 61 and will result in the reversal of the rotation of shaft 42. The reversal of the rotation of this shaft will operate to move the abrading member and its operating mechanism along its supporting track toward the stop 57 and when the lug 56 contacts with said stop, saidrod 54 will again be shifted and the direction of the rotation of shaft 42 again reversed through the mechanism and in the manner hereinbefore explained. The weight 62 is provided at the free end of the lever 59 so as to prevent the disengagement of the clutches until the rod 54 is shifted by the positive pressure of the lug 56, as hereinbefore explained.

Rotatably mounted in suitable bearings in the castings 7 and 8 is the shaft 64, which is provided with a hand wheel 65, which is fixed thereon and secured to the respective castings 10 and 11 are the upstanding rack members 66 and 67, respectively. The respective ends of the shaft 64 have small spur gears 68 and 69, which mesh with the corresponding rack faces of the members 66 and 67. By the manipulation of the handle 65 the entire operative mechanism of the device may be elevated or lowered upon the legs 1, 2 and 3. Fixed to one end of the shaft 64 is the ratchet wheel 70 and pivoted to the castings 7 is the dog 71, which is normally held in engagement with said ratchet wheel by means of the pull spring 72, one end of which is attached to the casting 7 and the other end of which is attached to the outer end of said dog. When it is desired to turn the hand wheel 65, so as to elevate the mechanism, it should be rotated in the direction indicated by the arrow in Fig. 10 and said mechanism will be locked in Its elevated position by the engagement of said dog w1th said ratchet wheel and when it is desired to lower said mechanism, the dog should be manually released and the mechanism will be lowered by force of gravity to the desired position when said dog may be again engaged with said ratchet wheel.

What I claim is 1. A polishing machine including a track, supporting members therefor, a rotatable abrading member, a mechanism slidably mounted on said track and operatively connected with said abrading member, a driving means in operative connection with said mechanism, through which said abrading member is rotated, means for moving said abrading member and its operative mechanism back and forth along said track, means for automatically reversing said moving means, and means for elevating and lowering said track and its appendants on said supporting member.

2. A polishing machine including a track, supporting members therefor, a rotatable abrading member suspended from and movable lengthwise relative to said track, a driving means operatively connected with said nected with said abrading member, a

abrading member and rotating the same, means in operative connection with said driving means and abrading member and operating to drive said abrading member back and forth along said track, a mechanism for reversing said last mentioned means at predetermined intervals and a manual mechanism for elevating and lowering said track and its appendants upon said supporting members.

3. A polishing machine including a track, supporting members therefor, means for elevating and lowering said track upon said supporting members, a frame slidably mounted on the track, a rotatable abrading member depending from the frame and having a limited oscillatory movement relative to the track, a drive shaft operatively connected with said abrading member and rotating the same, a screw shaft having operative connection with said frame and provided to drive the same back and forth along said track, a mechanism for operatively con-- meeting said drive shaft and screw shaft, means actuated by said frame and automatically reversing said mechanism at predetermined intervals.

7 4. A polishing machine including a track, supporting members therefor, a rotatable abrading member, a mechanism slidably mounted on said track and operatively i50nd 1n passageway being provided which leads through said abrading member to the operative surface thereof, a fluid pipe in communication with said passageway, a driving means in operative connection with said mechanism through which said abrading member is rotated, means for moving said abrading member and its operative mechanism back and forth along said track and means for elevating and lowering said track {aid its appendants on said supporting memrs. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN G. GIESBERG. Witnesses:

MAY MONTGOMERY, F LORENCE GREENOUGH. 

